From c81841b715491437cf27ed6cc6ce0ada92ae230a Mon Sep 17 00:00:00 2001
From: Dana Robinson <43805+derobins@users.noreply.github.com>
Date: Wed, 6 Apr 2022 16:04:22 -0700
Subject: Brings release timeline and github action changes from develop
 (#1597)

---
 .github/workflows/main.yml        |   3 +++
 README.txt                        |  20 +++++++++++++++++
 doc/img/release-schedule.plantuml |  45 ++++++++++++++++++++++++++++++++++++++
 doc/img/release-schedule.png      | Bin 0 -> 16991 bytes
 4 files changed, 68 insertions(+)
 create mode 100644 doc/img/release-schedule.plantuml
 create mode 100755 doc/img/release-schedule.png

diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index b99361e..2282a09 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -9,6 +9,9 @@ on:
     - '.github/**'
     - 'doc/**'
     - 'release_docs/**'
+    - 'ACKNOWLEDGEMENTS'
+    - 'COPYING**'
+    - '**.md'
     
 # A workflow run is made up of one or more jobs that can run sequentially or in parallel
 jobs:
diff --git a/README.txt b/README.txt
index 36d33b4..4bc0068 100644
--- a/README.txt
+++ b/README.txt
@@ -67,6 +67,26 @@ use and configuration
     https://forum.hdfgroup.org/t/quickstart-guide-welcome-to-the-new-hdf-forum
 
 
+RELEASE SCHEDULE
+----------------
+
+![HDF5 release schedule](doc/img/release-schedule.png) 
+
+HDF5 does not release on a regular schedule. Instead, releases are driven by
+new features and bug fixes, though we try to have at least one release of each
+maintenance branch per year. Future HDF5 releases indicated on this schedule
+are tentative. 
+
+| Release | New Features |
+| ------- | ------------ |
+| 1.13.2 | VFD SWMR, Onion VFD, Selection I/O |
+| 1.13.3 | Multi-Dataset I/O |
+| 1.13.4 | Subfiling |
+
+This list of feature release versions is also tentative, and the specific release
+in which a feature is introduced may change.
+
+
 SNAPSHOTS, PREVIOUS RELEASES AND SOURCE CODE
 --------------------------------------------
 Periodically development code snapshots are provided at the following URL:
diff --git a/doc/img/release-schedule.plantuml b/doc/img/release-schedule.plantuml
new file mode 100644
index 0000000..f5aa62a
--- /dev/null
+++ b/doc/img/release-schedule.plantuml
@@ -0,0 +1,45 @@
+The release timeline was generated on PlantUML (https://plantuml.com)
+
+The current script:
+
+@startuml
+title HDF5 Release Schedule
+
+projectscale monthly
+Project starts 2021-01-01
+
+[1.8] starts 2021-01-01 and lasts 114 weeks
+[1.8.22] happens 2021-02-05
+[1.8.23] happens 2022-12-31
+[1.8.23] displays on same row as [1.8.22]
+[1.8] is colored in #CC6677
+
+[1.10] starts 2021-01-01 and lasts 114 weeks
+[1.10.8] happens 2021-10-22
+[1.10.9] happens 2022-05-31
+[1.10.9] displays on same row as [1.10.8]
+[1.10] is colored in #DDCC77
+
+[1.12] starts 2021-01-01 and lasts 114 weeks
+[1.12.1] happens 2021-07-01
+[1.12.2] happens 2022-04-30
+[1.12.2] displays on same row as [1.12.1]
+[1.12] is colored in #88CCEE
+
+[1.13] starts 2021-01-01 and lasts 104 weeks
+[1.13.0] happens 2021-12-01
+[1.13.1] happens 2022-03-02
+[1.13.2] happens 2022-06-31
+[1.13.3] happens 2022-08-31
+[1.13.4] happens 2022-10-31
+[1.13.1] displays on same row as [1.13.0]
+[1.13.2] displays on same row as [1.13.0]
+[1.13.3] displays on same row as [1.13.0]
+[1.13.4] displays on same row as [1.13.0]
+[1.13] is colored in #44AA99
+
+[1.14] starts at 2022-12-31 and lasts 10 weeks
+[1.14.0] happens at 2022-12-31
+[1.14] is colored in #AA4499
+@enduml
+
diff --git a/doc/img/release-schedule.png b/doc/img/release-schedule.png
new file mode 100755
index 0000000..c2ed241
Binary files /dev/null and b/doc/img/release-schedule.png differ
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